nixos error

Job for mnt-osx.mount failed. See "systemctl status mnt-osx.mount" and "journalctl -xe" for details.
warning: the following units failed: mnt-osx.mount

● mnt-osx.mount - /mnt/osx
   Loaded: loaded (/etc/fstab)
   Active: failed (Result: exit-code) since Fri 2015-01-09 11:21:57 MST; 20ms ago
    Where: /mnt/osx
     What: osx:/Users/user
     Docs: man:fstab(5)
           man:systemd-fstab-generator(8)
  Process: 2508 ExecMount=/nix/store/8brvi9pvvvj5wksgxzgc56lwfyrw3561-util-linux-2.25.1/bin/mount -n osx:/Users/user /mnt/osx -t nfs -o defaults,relatime (code=exited, status=32)

Jan 09 11:21:57 nixos mount[2508]: mount.nfs: access denied by server while mounting osx:/Users/user
Jan 09 11:21:57 nixos systemd[1]: mnt-osx.mount mount process exited, code=exited status=32
Jan 09 11:21:57 nixos systemd[1]: Failed to mount /mnt/osx.
Jan 09 11:21:57 nixos systemd[1]: Unit mnt-osx.mount entered failed state.
warning: error(s) occured while switching to the new configuration